From 99aa2da7ea1f82eb8385835e5e7bf293c8da4fb5 Mon Sep 17 00:00:00 2001
From: Andrew Gerrand <adg@golang.org>
Date: Wed, 8 May 2013 15:58:43 -0700
Subject: [release-branch.go1.1] net: fix dial race on plan9 and windows
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««« CL 9159043 / f1ddc3ce3dfe
net: fix dial race on plan9 and windows

Fixes #5349.

R=golang-dev, lucio.dere, dsymonds, bradfitz, iant, adg, dave, r
CC=golang-dev
https://golang.org/cl/9159043
»»»

R=golang-dev
CC=golang-dev
https://golang.org/cl/9315043
---
 src/pkg/net/dial_gen.go      | 18 +++++++++++++++---
 src/pkg/net/dial_gen_test.go | 11 +++++++++++
 2 files changed, 26 insertions(+), 3 deletions(-)
 create mode 100644 src/pkg/net/dial_gen_test.go

diff --git a/src/pkg/net/dial_gen.go b/src/pkg/net/dial_gen.go
index 0a3277de46..19f8681682 100644
--- a/src/pkg/net/dial_gen.go
+++ b/src/pkg/net/dial_gen.go
@@ -10,14 +10,23 @@ import (
 	"time"
 )
 
+var testingIssue5349 bool // used during tests
+
 // resolveAndDialChannel is the simple pure-Go implementation of
 // resolveAndDial, still used on operating systems where the deadline
 // hasn't been pushed down into the pollserver. (Plan 9 and some old
 // versions of Windows)
 func resolveAndDialChannel(net, addr string, localAddr Addr, deadline time.Time) (Conn, error) {
-	timeout := deadline.Sub(time.Now())
-	if timeout < 0 {
-		timeout = 0
+	var timeout time.Duration
+	if !deadline.IsZero() {
+		timeout = deadline.Sub(time.Now())
+	}
+	if timeout <= 0 {
+		ra, err := resolveAddr("dial", net, addr, noDeadline)
+		if err != nil {
+			return nil, err
+		}
+		return dial(net, addr, localAddr, ra, noDeadline)
 	}
 	t := time.NewTimer(timeout)
 	defer t.Stop()
@@ -28,6 +37,9 @@ func resolveAndDialChannel(net, addr string, localAddr Addr, deadline time.Time)
 	ch := make(chan pair, 1)
 	resolvedAddr := make(chan Addr, 1)
 	go func() {
+		if testingIssue5349 {
+			time.Sleep(time.Millisecond)
+		}
 		ra, err := resolveAddr("dial", net, addr, noDeadline)
 		if err != nil {
 			ch <- pair{nil, err}
diff --git a/src/pkg/net/dial_gen_test.go b/src/pkg/net/dial_gen_test.go
new file mode 100644
index 0000000000..c857acd06d
--- /dev/null
+++ b/src/pkg/net/dial_gen_test.go
@@ -0,0 +1,11 @@
+// Copyright 2013 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build windows plan9
+
+package net
+
+func init() {
+	testingIssue5349 = true
+}
-- 
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